Woodworking machine



May 11 1926.

D. H. HERBERT WOODWORKING MACHINE Filed April 8,

1924 4 Sheets-Sheet 1 O a O G ii g H 4C a m nuq u W 0 Mi 7 N\ r Ma 'n 1926. 1,583,829

D. H. HERBERT WQODWORKING MACHINE Filed April 8, 1924 4 Sheets-Sheet 2 (EV/Home May 11 1926 D. H. HERBERT WOODWORKING MACHINE Filed April 8, 1924 4 Sheets-Sheet 3 go mental Donald/ Heme/z chlom aa 4 4 Sheeis-gheet 4 D. H; HERBERT WOODWORKING MACHINE Filed April 8, 1924 May 11 1926.

Patented May 11, 1926.

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DONALD HVHEBBEB-T, .OF SPOKANE, WASHINGTON.

woonwonmive MACHINE.

,Application filetl April 8, 1924. Serial No. 704,933.

the machine for adaptation to various sizes of stock or material. 7

The invention involves the use of rotary boring and cutting tools, and feed mechanism, all of which are compactly arranged and driven from a single source of .power, and by means of which the stock for sash rails are automatically fed, successively .to the several machine tools, and after being charged from the machine. a The stock or rails are fedautomatically in a vertical plane to the machine and transferred or moved laterally and intermittently across the machine during the operation of the machine tools, and are positively retained and guided,until the completed articles are delivered. 7 v 5 Means arev provided for adjusting the feed mechanism to various sizes of stock, and for adjusting the boring bits and rotary cutting heads, as will be hereinafter more fully pointed out. i

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention applied to a sash-rail machine, but it will be understood that the machine is adapted for, use in,

connection with other structures to be bored and drilled. In the drawings the elements of the machine are combined and arranged according to the best'mode Ihave thus far devised for the application of the principles of my invention. I 7 Figure l'is a view'in side elevati'o r ofa machine embodying my invention, the hopperbeing adjusted for short length rails. Figure 2 is a view-in elevationof themachine looking from the left end in Figure 1.

Figure 3 is an end elevation of the machine looking from the right in Figure 1. Figure 4: is a view in elevation from the rear side of Figure 1, parts of the machine being omitted for convenience of illustration.

Figure ,5

operated upon the finished rails are disis a detail. view in perspective showing the cam shaft and operating cams thereon for actuating the several parts of the machine.

"Figure 6 is top plan view of the ma chine. c

Figure Tie a detail perspective view of one of the control bars and its connections for the stock or rails. I

Figures 8 and 9 are perspective views of portions of rails that have been operated on by the machine. As an aid in understanding the utility and operation of the machine reference may first be had to Figures 8 and9 of the drawing where the rails 1 and 2 are shown, each havinga longitudinally extending groove 3 and a transversely extending pocket 4:. In Fig ure 8 thegroove or mortiseand the pocket are connected by a narrower groove 5, and in Figure 9 these elements are connected by an angularly disposed h'ole6. In eachcase the pocket is designed ;to receive the knotted end of a sash cord which is passed through the grooves or groove and hole.

By three successive operations of the machine the pocketl is boredwith a boring bit; the channel orjgroove '3 is fashioned by the utilization of one or more rotary cutter heads; and when the secret or invisible hole 6 is tobe bored, this is the final operation of the operating .tools.

The main frame 7 of the machine is of generally rectangular shape and provided with a skeleton top or table 8, and the operating parts of the machine are driven from a belt 9which transmits" power from a suitable. source to the driving pulley 10 on the transversely arranged power shaft 11 journaled in, the main frame at the lower portion thereof. V

The sash rails or blanks are furnished to the machine in uniform size and shape, and placed in a feed hopper located at the top of the machine and at one side thereof above the skeleton table top.

v, The feed hopper com-prises fixed end sufficient length to receive the maximum length or sash rails and the hopper is adapted for use with shorter lengths by utilizing the slida-ble bracket 16 which slidable and supported by means of the block- 16 on the inner tracks 17 of the side rails 13. The bracket may he slid longitudinally of the machine to compensate for arious lengths of the rails to be operated on and the rails ar contained in the hopper in the form of a vertical stack from which the lowermost rail is intermittently pushed transversely of the machine.

As shown in Figure 3 the successive lowermost rails of the stack have been pushed or fed laterally of the machine at int nttent periods until a row of eight rails is seen on the machine top. The feeding device for this purpose includes a longitudinally extending push bar 18 located at the side of the machine below the main portion of the hopper and the push is designed to reciprocate late ally or transversely of the machine top. The pusher bar is pro vided at its ends with a oair 0t oscillatingarms 20 fixed to a rock shaft 21 which is journaled in bearings 22 at the side of the machine.

The inward swinging movement of the arms 20 and also of the pusher bar is limited by the use o1": stops 23 in the form of bolts in the arms that will contact with the side frame 24 to stop the pusher bar at the proper position after pushing; the lowermost rail from the stack in the hopper.

The horizontal rock shaft of the pusher or feed mechanism is actuated through a lever 25 fixed at one end to the shaft and at its other end pivoted to the adjustable rod 26 extending downwardly and pivoted at 27 on the horizontally disposed weighted arm 28 This lever arm 28 is provided at its free end with a weight 29 and is pivoted at 30 to the main frame of the machine insuch manner that the weight will normally hold the pusher bar 18 in retracted position, and after a forward or working stroke oi t 116 pusher bar to feed a rail the weight returns the pusher bar to retracted position.

The lateral workingstrolie of the feed. 1 or pusher bar is caused by depressing the freeend 31 of the lever arm 28 through the action of an anti-friction roller 32 carried by'ac'am 33 on the cam shaft 34!: which shaft extends transversely of the machine and is journaled in the machine "frame near its lower portion.

The cam shaft is revolved through its pulley 35, belt 36 and pulley 37, the latter being fiizedyto revolve with the countershatt 38. The shaft 38 is driven from the shaft 11 by means of pulley 39 thereon and the belt 40 which passes over pulley 41 on the shaft 38 (see Fig. 4%. As the rails in a row are moved latera ly and intermittently by the {push bar 18 they are held down and retained in horizontal position on the cross bars 2 of the machine top by means of a presser 4 .2, which extends transversely of the machine and overlaps the row of rails while they are being worked upon during the formation of the pocket and grooves.

This press'er bar is urged downwardly by continuous pressure to: prevent the rails from rising, and is supported from the standard fixed at the end 01 the machine frame 1. At the upper end oithis stand ard a yoljie 4A is provided in. which are two springs 4-5 and 46, the lower spring 46 be ing the stronger and both springs exerting pressure on the interposed head i of a lever arm 48 which is pivoted at 49 in the fined bracket 50. To the lever arm 48 is rigidly attached a pressure arm .51 from which the presser p'l'ate 4:2 is suspended'by means of a pivoted link 52, and a guide link 53 pivoted in the lined bracket is also pivoted to the presser plate to hold it in operative position. By means of the presser plate the row of rails is held or retained under resilient pressure as the rails are ted laterally on the bars 2 and acted upon by the machine tools as will be described.

The lateral movement of. the row of rails is controlled "by means of a plurality of movable abutments or detents arranged transversely of the machine andadapted to engage the outer side ofthe forward rail'o'i' the'row, and intermittently actuated to release each succeeding completed rail and remove 'saidrail "for its discharge.

One of these oscillatable 'detents is illustrated in Figure 7 where an arm 54- is shown carryingat'one end an .antifriction roller 55 for contact with the side 01 the first rail. The detent arm is slotted at 56 for connection by bolt 57 to a base plate 58 beneath the arm, and this base plate which is disposed transversely of the rock bar 59 is fixed to rock therewith. The'detentarin is slidable relatively to the base plate, and a coiled spring 60 has its respective ends attached to the "two members 5 1 and 58 of the detent to exert its tension to move the detent arm inthe path oi the laterally moving row of rails. VVhen depressed to dotted position in Figures'2 and 3 this roller permits the discharged rail to ride thereupon and the completed rails are thus lifted by two or more "dete'nt arms to position sothat they maybe transferred over crossbars 61 on the machine bars 2 and disposed of in suitable manner.

The rollerends of the detent arms are depressedby act'uation'of the longitudinally extending rock bar 59 which is journaled in bearings 62 of the machine top8. The rock bar is oscillated or rocked at predetermined intervals to swing the detent arms through the use of a bracket 63 on the bar and a verllii tically arranged lifting rod 64 attached thereto, which bar is attached to and raised by a longitudinally extending frame bar 65.

The frame bar is elevated by movement started from the cam 66 on the cam shaft 34 which cam co-acts with a roller 67 journaled at the lower end of a rod 68 which is pivotally supported or suspended by .a link 69 from the bracket 70shown in dotted lines in Fig. 4.

The rod 68 extends upwardly and is pivoted to the frame 71, and a rod 7 2 (Fig. 3)

connects frame bars 71 and 65. When frame 71 in Fig. 4 drops, due to the action of the rotating cam 66 the rock bar 59 is oscillated to lower rollers 55 to dotted position in Fig. 3 which permits the rail at the left in said figure to move over on top of the roller end of the detent arms. Then by action of the continually revolving cam 66 the arm and rail are lifted to position to permit transfer of the rail to thedischarge guides 61 on the cross bars 2. y r p The two bits 73 and 74 which bore the pocket 4 and the end of the groove 3 are operated in unison and simultaneously by the gears 75 and 7 6 and driven from shaft 11 by pulley 77 and belt 78, which belt is twisted around pulley 7 9 of the boring shaft 80. These boring tools are disposed at an angle as shown in Fig. 1 and are supported on a plate 81 which is slidable in the fixed frame 82. The boring head or slide plate 81 is actuated from the cam 33 on the cam t shaft 34, by means of a cam roller 83 hearing on the cam and the arm 84 which carries the roller and brace bar 85 both of which are fixed to the slide plate or head 81. These two boring tools are elevated to bore the holes in the rail from the underside, and are then lowered to permit change inthe position of the bored rail with eachrevolution of the cam 33 of the shaft 34.

After the pocket has been bored the rails are moved laterally to present the bored rail for action by two rotary cutter heads 86 and 87 the former to cut the wide groove 3 and the latter to cut the narrow groove 5 when the narrow groove is used. The cutter heads have both a vertical movementfor cutting the proper depth of groove and a movement longitudinally of the machine to cut the longitudinally extending grooves, and the cutter heads are located at one side of the boring tools 73 and 74.

These cutter heads .are carried on a subframe 88 having a screw 89 for lateral adjustment and screw 90 for adjusting it verlically. Power for driving the cutter heads 1s taken from the pulley 91 by belt 92 to the pulleys of the cutter heads indicated at 93. The transmission pulley 91 is driven from the shaft 11 by sprocket chain 94 and sprockets 95 and 96. Pulley 91 is adapted to swing with its frame 97 on shaft 11 as a center with carriage 98, by action of the lever arm 99,which is pivoted at 100 to the machine frame at its opposite end. The lever arm is swung on its pivot by action of the eccentric 101 on the cam shaft 34 and link 102 pivoted to the arm 99. At 103 the lever arm is connected to the reciprocable carriage. Thus as the carriage is reciprocated longitudinally of the rail it also is given a vertical movement to insert and force the cutter heads into the rail by the cam 66 and its connections asdescribed.

The secret or invisible hole 6 connecting the pocket and the groove or channel in the rail is sometimes substituted .forthe narrow channel 5 and this hole is bored with a bit As seen in Figure 6 this'bit- 104 is actuated from the cam shaft 34 through the revolving cam 105, the bit beinglocated above the machine top with its slidable shank 106 jOLl1 naled in fixed bearings 107. 'The driven pulley for rotating the bit indicated at 108 is driven by the belt 108 from the electric motor 108*, but the movement of the bit is controlled, as are the other boring and cutting tools, from the cam shaft 34. A collar 109 on the bit shank is supported on the head 110 of a lever arm 111 which is pivoted at 112 on the machine frame. This lever arm has a weight 113 at its free end and below the weight at the extremity of the arm a horizontally disposed link 114 is pivoted which slides and is guided between the antifriction guide rollers 115 journaled on the machine frame, one above and one below the link. At its free end this link is provided with a cam roller 116 for co-action with the cam 105 on the cam shaft 34. By action of the cam 105 the lever arm 111 isswung as position the rail is bored for the pockets by the drills 7 and 74; in its second position cutter head 86 may channel out the wide groove; and in third position the bit 104 may bore the invisible hole, in which case thecutter head 87 is not used.

When both cutter heads 86 and 87 are used for cutting the two grooves, the bit 104 is disconnected and not used. Thus the rails are moved and a boring and cutting operation take plate with each revolution of the cam shaft. And the row of rails is intermittently moved step by step, each succeeding completed rail being picked up by two or more of the detents for transfer to the discharge rails 61 as described.

Having thus fully described my invention,

What I claim as new and desire to secure by Letters Patent is 1 The combination in a Woodworking machine with its top and a hopper for a vertical stackqof rails, of means for intermittently feeding the lowermost rails to form a. horizontal row, a transversely disposed suspended retaining plate tor said row a lever ari'n pivoted to said plate and springs engaging said arm for normally holding" the plate in contact With said row of rails,

pivoted discharging arm for controlling the lateral movement of said row of rails, and means for actuating said arm to successively remove completed rails.

2. The combination in a Woodworking machine With its top and a hopper for a vertical stack of rails, of an operating shaft, feed mechanism for intermittently moving the lowermost rails to form a horizontal row means for retaining said row against vertical movement and resilient means to actuating said retaining means, means for controlling the lateral movement of the row of rails connections from the operating shaft to said feed mechanism, and connections from said shaft to saidcontrol means Whereby the latter is actuated to successively remove completed rails from the row.

3. In a Woodworking machine adaptedto feed rails in a row, the combination of a rock bar and actuating --means therefor and a transversely disposed base plate-fixed to said bar, a spring pressed ,detent arm carried by said base plate for controlling the movement of said row of rails and adapted to be depressed to release and support a rail, and means whereby said arm is moved to lift ,a completed rail from said row.

4%. In a. Woodworking machine adapted to teed rails in a row, the combination of a rock bar and a transversely disposed lease plate fixed thereto and provided with a bolt, of a slotted and spring pressed detent arm carried by the base plate for controlling lateral movement of said row of rails and adapted to be depressed to release and support a rail, and means for actuating said rock bar whereby said arm is movedhto lift a completed rail from said row.

In testimonv whereof I my signature.

DONALD H. HERBERT. 

